/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.mpp.plan.statement.metadata;

import org.apache.iotdb.commons.path.PartialPath;
import org.apache.iotdb.db.mpp.plan.statement.Statement;
import org.apache.iotdb.db.mpp.plan.statement.StatementType;
import org.apache.iotdb.db.mpp.plan.statement.StatementVisitor;

import java.util.Collections;
import java.util.List;
import java.util.Map;

/**
 * ALTER TIMESERIES statement.
 *
 * <p>Here is the syntax definition:
 *
 * <p>ALTER TIMESERIES path RENAME | SET | DROP | ADD TAGS | ADD ATTRIBUTES | UPSERT
 */
public class AlterTimeSeriesStatement extends Statement {
    private PartialPath path;
    private AlterTimeSeriesStatement.AlterType alterType;

    /**
     * used when the alterType is RENAME, SET, DROP, ADD_TAGS, ADD_ATTRIBUTES when the alterType is
     * RENAME, alterMap has only one entry, key is the previousName, value is the currentName when the
     * alterType is DROP, only the keySet of alterMap is useful, it contains all the key names needed
     * to be removed
     */
    private Map<String, String> alterMap;

    /**
     * used when the alterType is UPSERT
     */
    private String alias;

    private Map<String, String> tagsMap;
    private Map<String, String> attributesMap;

    public AlterTimeSeriesStatement() {
        super();
        statementType = StatementType.ALTER_TIMESERIES;
    }

    @Override
    public List<PartialPath> getPaths() {
        return Collections.singletonList(path);
    }

    public PartialPath getPath() {
        return path;
    }

    public void setPath(PartialPath path) {
        this.path = path;
    }

    public AlterType getAlterType() {
        return alterType;
    }

    public void setAlterType(AlterType alterType) {
        this.alterType = alterType;
    }

    public Map<String, String> getAlterMap() {
        return alterMap;
    }

    public void setAlterMap(Map<String, String> alterMap) {
        this.alterMap = alterMap;
    }

    public String getAlias() {
        return alias;
    }

    public void setAlias(String alias) {
        this.alias = alias;
    }

    public Map<String, String> getTagsMap() {
        return tagsMap;
    }

    public void setTagsMap(Map<String, String> tagsMap) {
        this.tagsMap = tagsMap;
    }

    public Map<String, String> getAttributesMap() {
        return attributesMap;
    }

    public void setAttributesMap(Map<String, String> attributesMap) {
        this.attributesMap = attributesMap;
    }

    @Override
    public <R, C> R accept(StatementVisitor<R, C> visitor, C context) {
        return visitor.visitAlterTimeseries(this, context);
    }

    public enum AlterType {
        RENAME,
        SET,
        DROP,
        ADD_TAGS,
        ADD_ATTRIBUTES,
        UPSERT
    }
}
